Why always bend the pipe bend

Author: ComeFrom: Date:2017-03-09 17:54:33 Hits:430
If the steel pipe is flat, no cracks, then the steel pipe itself is not a problem.

Or the main pipe bending machine mold, mold the composition of the enclosed circle diameter must be exactly the same with the outer diameter of steel pipe, the whole process of the speed to be slower.
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